All components for installation are included with this new Toyota Tundra security alarm system which is designed for a perfect fit and operation because it is factory designed for your vehicle. For perfect operation insist on this factory Toyota Tundra alarm system for your Tundra which only makes sense if your going to get a product for your vehicle it should be a factory item. You will want this Toyota Tundra security system made to factory specifications for your vehicle not an aftermarket system that may not be compatible to your vehicle and could be easily disarmed. Because it is a factory accessory you can be sure that the application of this Toyota Tundra security system will be right for your vehicle with all the necessary hardware needed for a quality installation.